---

# 🧭 GCC 13.3.0 从源码构建指南（适用于 Kylin Linux Advanced Server V10 / RHEL 系）

目标：在 `/opt/gcc-13` 构建一套完全独立的新 GCC，不覆盖系统自带版本。  
附带可选 `/opt/binutils-2.40`，用于提升链接器兼容性。

---

## 一、系统准备

### 1️⃣ 更新系统并安装构建依赖

```bash
sudo dnf groupinstall "Development Tools" -y
sudo dnf install -y \
  gcc gcc-c++ make bison flex texinfo git wget curl xz gawk perl python3 \
  glibc-devel glibc-headers libstdc++-devel zlib-devel \
  gmp-devel mpfr-devel libmpc-devel isl-devel
```

> 若系统仓库的 `gmp/mpfr/mpc/isl` 太旧，也没关系，下面会采用 **内联构建**。

---

## 二、可选但推荐：升级 binutils (2.40)

### 2️⃣ 构建并安装

```bash
cd soft
wget https://mirrors.aliyun.com/gnu/binutils/binutils-2.40.tar.gz
tar -xzf binutils-2.40.tar.gz
mkdir build-binutils-2.40 && cd build-binutils-2.40

../binutils-2.40/configure \
  --prefix=/usr/local/binutils-2.40 \
  --disable-multilib \
  --enable-gold \
  --enable-ld=default \
  --enable-plugins

make -j"$(nproc)"
make install
```

### 3️⃣ 激活新版 binutils

```bash
export PATH=/usr/local/binutils-2.40/bin:$PATH
```

验证：

```bash
ld --version | head -1
as --version | head -1
```

输出应含 “2.40”。

> ✅ 若系统已有较新 binutils，可跳过本节。

---

## 三、下载并准备 GCC 13.3.0 源码

### 4️⃣ 获取源码

```bash
cd soft
wget https://mirrors.aliyun.com/gnu/gcc/gcc-13.3.0/gcc-13.3.0.tar.xz
tar -xf gcc-13.3.0.tar.xz
cd gcc-13.3.0
```

### 5️⃣ 下载依赖库（推荐）

```bash
./contrib/download_prerequisites
```

该脚本会自动下载合适的：

- GMP
    
- MPFR
    
- MPC
    
- ISL
    

> 若离线环境，可在其他机器下载后放到以下目录：
> 
> ```
> gcc-13.3.0/gmp/
> gcc-13.3.0/mpfr/
> gcc-13.3.0/mpc/
> gcc-13.3.0/isl/
> ```

---

```
cat > contrib/download_prerequisites <<'EOF'
#!/bin/sh
# Modified for Aliyun GNU mirror + official ISL source (SourceForge)
# Author: windyboy setup helper

set -e

gmp='gmp-6.2.1.tar.bz2'
mpfr='mpfr-4.1.0.tar.bz2'
mpc='mpc-1.2.1.tar.gz'
isl='isl-0.24.tar.bz2'

fetch='wget -c --no-check-certificate'

# 阿里云 GNU 镜像基础路径
base="https://mirrors.aliyun.com/gnu"

download() {
    pkg=$1
    url=$2
    echo "==> Downloading $pkg"
    ${fetch} "$url" -O "$pkg" || {
        echo "❌ Failed: $pkg"
        exit 1
    }
}

download "$gmp"  "$base/gmp/$gmp"
download "$mpfr" "$base/mpfr/$mpfr"
download "$mpc"  "$base/mpc/$mpc"
download "$isl"  "https://libisl.sourceforge.io/$isl"

echo "==> Extracting..."
for ar in $gmp $mpfr $mpc $isl; do
    tar -xf "$ar"
    ln -sf "${ar%.tar*}" "${ar%-*}"
done

echo "✅ All prerequisites downloaded and extracted successfully (Aliyun + SourceForge)."
EOF

chmod +x contrib/download_prerequisites
```


## 四、构建并安装 GCC 13.3.0

### 6️⃣ 创建构建目录（out-of-tree）

```bash
cd soft
mkdir build-gcc-13 && cd build-gcc-13
```

### 7️⃣ 配置参数

```bash
../gcc-13.3.0/configure \
  --prefix=/usr/local/gcc-13 \
  --enable-languages=c,c++ \
  --disable-multilib \
  --enable-checking=release \
  --enable-lto \
  --enable-threads=posix \
  --with-system-zlib
```


说明：

- `--disable-multilib`：仅构建 64 位版，节省空间、避免冲突
    
- `--enable-lto`：启用 Link Time Optimization
    
- `--enable-threads=posix`：标准线程支持
    
- `--with-system-zlib`：若安装了 zlib-devel
    

---

### 8️⃣ 编译与安装

```bash
make -j"$(nproc)"
make install
```

💡 **提示：**

- 首次编译耗时较久（15–60 分钟）。
    
- 若出现 OOM，可降并行度：
    
    ```bash
    sudo make -j4
    ```
    

---

## 五、启用与测试新 GCC

### 9️⃣ 临时启用

```bash
export PATH=/usr/local/gcc-13/bin:$PATH
export LD_LIBRARY_PATH=/usr/local/gcc-13/lib64:$LD_LIBRARY_PATH
```

### 🔟 验证版本

```bash
gcc -v
g++ -v
```

应显示：

```
gcc version 13.3.0 (GCC)
```

测试代码：

```bash
cat > hello.cpp <<'EOF'
#include <iostream>
int main() { std::cout << "Hello GCC " << __VERSION__ << std::endl; }
EOF
g++ -std=c++20 hello.cpp -O2 -o hello
./hello
```

输出应为：

```
Hello GCC 13.3.0
```

---

## 六、长期使用与并存管理

### 11️⃣ 持久化环境变量

**用户级：**

```bash
echo 'export PATH=/opt/gcc-13/bin:$PATH' >> ~/.bashrc
echo 'export LD_LIBRARY_PATH=/opt/gcc-13/lib64:$LD_LIBRARY_PATH' >> ~/.bashrc
source ~/.bashrc
```

**系统级（所有用户生效）：**

```bash
sudo tee /etc/profile.d/gcc13.sh <<'EOF'
export PATH=/opt/gcc-13/bin:$PATH
export LD_LIBRARY_PATH=/opt/gcc-13/lib64:$LD_LIBRARY_PATH
EOF
sudo chmod +x /etc/profile.d/gcc13.sh
```

---

### 12️⃣ 运行时库兼容性（关键）

若运行你的程序时报：

```
GLIBCXX_3.x.y not found
```

说明运行期加载了系统旧版 libstdc++。  
解决办法：

1. 临时解决：
    
    ```bash
    export LD_LIBRARY_PATH=/opt/gcc-13/lib64:$LD_LIBRARY_PATH
    ```
    
2. 编译期内嵌 rpath：
    
    ```bash
    g++ main.cpp -Wl,-rpath=/opt/gcc-13/lib64 -O2 -o app
    ```
    

---

## 七、常见问题与修复要点

|问题|原因|解决方案|
|---|---|---|
|`configure: error: GMP/MPFR/MPC not found`|系统库过旧或缺失|使用 `contrib/download_prerequisites`|
|`collect2: error: ld returned 1 exit status`|binutils 太旧|启用 `/opt/binutils-2.40` 并确认 PATH|
|`checking for sufficient default stack space... no`|栈空间不足|执行 `ulimit -s unlimited`|
|`cc1plus: out of memory`|并行过高或 swap 不足|降低并行度、添加 swap|

---

## 八、验证构建质量（可选）

自检：

```bash
cd /usr/local/src/build-gcc-13
sudo make -k check > test.log 2>&1
grep -A2 "Summary" test.log
```

成功率通常 > 99%，剩余测试多为非致命的浮点容差差异。

---

## ✅ 总结：完整流程一览

```bash
# 一次性复现构建流程 (示例版)
sudo dnf groupinstall "Development Tools" -y
sudo dnf install -y gcc gcc-c++ make bison flex texinfo git wget curl xz gawk perl python3 \
  glibc-devel glibc-headers libstdc++-devel zlib-devel gmp-devel mpfr-devel libmpc-devel isl-devel

cd /usr/local/src
sudo wget https://ftp.gnu.org/gnu/binutils/binutils-2.40.tar.xz
sudo tar -xf binutils-2.40.tar.xz
sudo mkdir build-binutils-2.40 && cd build-binutils-2.40
sudo ../binutils-2.40/configure --prefix=/opt/binutils-2.40 --disable-multilib --enable-gold --enable-ld=default --enable-plugins
sudo make -j"$(nproc)" && sudo make install
export PATH=/opt/binutils-2.40/bin:$PATH

cd /usr/local/src
sudo wget https://ftp.gnu.org/gnu/gcc/gcc-13.3.0/gcc-13.3.0.tar.xz
sudo tar -xf gcc-13.3.0.tar.xz
cd gcc-13.3.0 && ./contrib/download_prerequisites

cd /usr/local/src && sudo mkdir build-gcc-13 && cd build-gcc-13
sudo ../gcc-13.3.0/configure --prefix=/opt/gcc-13 --enable-languages=c,c++ --disable-multilib \
  --enable-checking=release --enable-lto --enable-threads=posix --with-system-zlib
sudo make -j"$(nproc)" && sudo make install

echo 'export PATH=/opt/gcc-13/bin:$PATH' | sudo tee /etc/profile.d/gcc13.sh
echo 'export LD_LIBRARY_PATH=/opt/gcc-13/lib64:$LD_LIBRARY_PATH' | sudo tee -a /etc/profile.d/gcc13.sh
sudo chmod +x /etc/profile.d/gcc13.sh
source /etc/profile.d/gcc13.sh
```

---

是否希望我把上述完整命令整理成 **一键可执行的 build-gcc13.sh 脚本**（带错误检查、日志输出、并自动检测是否已安装 binutils）？  
这样你只需运行一行命令即可完成全部流程。


openssl

```
./Configure --prefix=/usr/local/openssl-3 \
            --openssldir=/usr/local/openssl-3/ssl \
            shared zlib \
            enable-ec_nistp_64_gcc_128 \
            enable-tls1_3
```

```
make -j$(nproc)
make install
```

```
export CC=/usr/local/gcc-13/bin/gcc
export CXX=/usr/local/gcc-13/bin/g++
export CPPFLAGS="-I/usr/local/openssl-3/include"
export LDFLAGS="-L/usr/local/openssl-3/lib64"
```

```
echo "/usr/local/openssl-3/lib64" | sudo tee /etc/ld.so.conf.d/openssl-3.conf
```


```
export CPPFLAGS="-I/usr/local/openssl-3/include"
export LDFLAGS="-L/usr/local/openssl-3/lib -Wl,-rpath=/usr/local/openssl-3/lib"
export PKG_CONFIG_PATH="/usr/local/openssl-3/lib/pkgconfig"
export LD_LIBRARY_PATH="/usr/local/openssl-3/lib:$LD_LIBRARY_PATH"
export PATH="/usr/local/openssl-3/bin:$PATH"

./configure \
  --prefix=/usr/local/openssh-10 \
  --sysconfdir=/usr/local/openssh-10/etc \
  --with-ssl-dir=/usr/local/openssl-3 \
  --with-pam \
  --with-md5-passwords

```